Helmet cover



FIG. 1 is a front, top, left perspective view of a helmet cover showing our new design shown detached from an optional helmet;

FIG. 2 is a front, top, left perspective view of the helmet cover shown in FIG. 1;

FIG. 3 is a rear, top, left perspective view of the helmet cover shown in FIG. 1;

FIG. 4 front elevational view of the helmet cover shown in FIG. 1;

FIG. 5 is a left-side elevational view of the helmet cover shown in FIG. 1;

FIG. 6 is a right-side elevational view of the helmet cover shown in FIG. 1;

FIG. 7 is a rear elevational view of the helmet cover shown in FIG. 1;

FIG. 8 is a top plan view of the helmet cover shown in FIG. 1; and,

FIG. 9 is a bottom plan view of the helmet cover shown in FIG. 1.

The broken lines shown in the drawings represent portions of the helmet cover that form no part of the claimed design. 

CLAIM The ornamental design for a helmet cover, as shown and described. 